#!/bin/bash

ALIASESDB_STAMP=/var/lib/misc/postfix.aliasesdb-stamp

make_aliasesdb() {
		if [ "$(/usr/sbin/postconf -h alias_database)" == "hash:/etc/aliases" ]
		then
				# /etc/aliases.db may be used by other MTA, make sure nothing
				# has touched it since our last newaliases call
				[ /etc/aliases -nt /etc/aliases.db ] ||
						[ "$ALIASESDB_STAMP" -nt /etc/aliases.db ] ||
						[ "$ALIASESDB_STAMP" -ot /etc/aliases.db ] || return 0
				/usr/bin/newaliases
				touch -r /etc/aliases.db "$ALIASESDB_STAMP"
		else
				/usr/bin/newaliases
		fi
}

make_aliasesdb